variation in cavity width

by **worriedman** » Sat Apr 26, 2008 6:53 am

Novice question - am having professional building work done, and noticed that cavity tends to be larger at top of wall than bottom (i.e. the blockwork leans in slightly).
Is this a building technique, and if so, what for ?
Or, er is it wrong, and the brick and block walls should be perfectly parallel?
How much variation in gap would you expect to find in different parts of same wall - 1cm, 2cm, 3cm, more ?
thanks for any assistance
worriedman

by **welsh brickie** » Sat Apr 26, 2008 7:54 pm

hi to answer your question
when buiding cavity walls its very difficult to keep the cavity exact but a
tollerance of 10mm is normal.

by **worriedman** » Sun Apr 27, 2008 12:46 pm

thanks very much welsh brickie, that is useful input to a quality control discussion, and confirms my guess.
best
worriedman

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